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  <title>Document</title>
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<body>
  <script>
    // const fn = () => {
    //   console.log('hello')
    // }
    // fn()
    // const fn = (uname) =>({uname:uname})
    // console.log(fn('七七'))
    const getSum = (...arr) =>{
      let sum = 0
      for( let i = 0 ; i < arr.length ; i++){
        sum += arr[i]
      }
      return sum
    }
    // getSum(2,8)
    console.log(getSum(2,8));
  </script>
</body>
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